recall d = rt, distance = rate * time.
let's say airplane A is going at a rate of "r", therefore airplane B is moving faster, at a rate of "r + 80".
now, after 3 hours, both planes have been travelling for 3 hours each, and say if A has covered "d" miles, then B has covered the slack of 2490 - d.
I would assume it is 1/120th of a gallon
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The answer which you have chosen is <u>correct</u>.
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wouldent that be C?
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